UK US build up (sth)
— Phrasal Verb with build({{}}/bɪld/ verb (built, built)
► [I or T] to increase in quantity, or to add more of something so it increases in quantity: build up shares/stock/wealth »
At this time of year, stores are building up stock for Christmas.
build up experience/success/achievements »She joined the company in 2000 and has built up considerable experience in marketing.
Financial and business terms. 2012.